IWLOP #087 - Eratosthenes

IWLOP #087 - Eratosthenes

This prominent crater id post-imbrium Era, but pre-Copernican and lends its name tot he Eratosthenian Era. It can be found at the southern tip of Montes Apenninus.

Location: 14.5 N 11.3 W    Origin: Impact     Size: 58 km.     Rukl: 21, 32     Type: Complex Crater (CC)

Objects: Eratosthenes, Sinus Aestuum
Others Identified: Mons Wolf, Montes Apenninus 

Location: Home
Date: 2018-03-14
Time: 7:05 PM ADT
Equipment: 6" Skywatcher Dobsonian, 25 mm Plösl eyepiece + x2 Barlow
Magnification: x96
Seeing: Good (3)
Transparency: Good (3)

R1: Eratosthenes has a central peak and deeply terraced walls; more evidence of terracing on the east wall.
R2: Not much ejecta on SE side facing Sinus Aestuum.  
R3: Sinus Aestuum almost circular with perhaps wrinkle ridges suggesting previous craters long since filled in.

 

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